含制弹簧钢奥氏体晶粒长大与夹杂物的动态观察及分析

特殊钢 ›› 2011, Vol. 32 ›› Issue (1): 58-60.

含制弹簧钢奥氏体晶粒长大与夹杂物的动态观察及分析

姜超¹，刘雅政¹，张朝磊¹，肖金福1，张玮²，易敏²

1北京科技大学材料科学与工程学院，北京100083 ；
2首钢技术研究院，北京100041

收稿日期:2010-09-25 出版日期:2011-02-01 发布日期:2022-09-29
作者简介:姜超(1985-),男，硕士研究生，主要从事特殊钢组织性能控制研究。
基金资助:
中信-CBMM饨钢研究与开发项目资助(2007RMJS- D031)

Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel

Jiang Chao¹, Liu Yazheng¹, Zhang Chaolei¹, Xiao Jinfu¹, Zhang Wei² ，Yi Min²

1 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083.
2 Research Institute of Technology, Shougang, Beijing 100041

Received:2010-09-25 Published:2011-02-01 Online:2022-09-29

摘要/Abstract

摘要： 采用高温金相显微镜观察了含铌弹簧钢60Si2MnNb(%:0.57C、1.60Si、0.76Mn、0.34Cr、0.022Nb)在950～1 250℃真空加热时奥氏体晶粒长大现象,得到其晶粒长大动力学曲线,通过Arrhenius方程对粗化过程进行了曲线拟合;通过SEM(Scanning Electron Microscope)和EDS(Energy Dispersive Spectrometer)对出现的二相粒子进行了分析。实验结果表明,含铌弹簧钢60Si2MnNb晶粒粗化温度为1 050℃,较60Si2MnA钢的晶粒临界粗化温度TGC提高了100℃;出现的二相粒子为非金属夹杂物。

关键词: 含铌弹簧钢, 高温金相, 晶粒粗化, 夹杂物, 分析

Abstract: The behavior of austenite grain growth of Nb-bearing spring steel 60Si2MnNb (%: 0. 57C, 1. 60Si, 0. 76Mn, 0. 34Cr, 0. 022Nb) during heating at 950 ~ 1 250℃. in vacuum has been observed by using high temperature microscope, and the curve of coarsening process is fitted by Arrhenius equation to get the austenite grain growth dynamic curve； and an analysis on occurred second phase particles has been carried out by using scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Test results show that the grain coarsening temperature of Nb-bear- ing steel 60Si2MnNb is 1 050℃ it is higher that of steel 60Si2MnA by 100℃; the occurred second phase particles in steel are nonmetallic inclusions.

姜超, 刘雅政, 张朝磊, 肖金福, 张玮, 易敏. 含制弹簧钢奥氏体晶粒长大与夹杂物的动态观察及分析[J]. 特殊钢, 2011, 32(1): 58-60.

Jiang Chao, Liu Yazheng , Zhang Chaolei , Xiao Jinfu , Zhang Wei, Yi Min. Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel[J]. Special Steel, 2011, 32(1): 58-60.